.lesson-content {
    line-height: 1.6;
    max-width: 90%;
    margin: 0 auto;
    padding-bottom: 100px;
}


.lesson-content h1, .lesson-content h2, .lesson-content h3,
.lesson-content h4, .lesson-content h5, .lesson-content h6 {
    color: #333;
    margin: 1rem 0;
}

.lesson-content p {
    margin-bottom: 1rem;
    text-align: justify;
}

.lesson-content ul, .lesson-content ol {
    margin-bottom: 1rem;
    padding-left: 2rem;
}

.lesson-content li {
    margin-bottom: 0.5rem;
}

.lesson-content pre {
    background-color: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 0.375rem;
    padding: 1rem;
    overflow-x: auto;
}

.lesson-content code {
    background-color: #f8f9fa;
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    font-size: 0.875em;
}

.lesson-content blockquote {
    border-left: 4px solid #007bff;
    padding-left: 1rem;
    margin: 1rem 0;
    font-style: italic;
}

.lesson-content hr {
    border: none;
    border-top: 2px solid #e9ecef;
    margin: 2rem 0;
}

.lesson-content a {
  color: blue;
  text-decoration: underline;
}


.lesson-content img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 1rem auto;
    border-radius: 0.375rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}


.ce-block--type-image {
    display: flex;
    justify-content: center;
    margin: 1rem 0;
}


.ce-block--stretched img {
    width: 100%;
    height: auto;
}


.ce-block--with-background {
    background-color: #f0f0f0;
    padding: 10px;
    border-radius: 4px;
}


.ce-block--with-border img {
    border: 2px solid #ccc;
    border-radius: 4px;
}


.ce-block--type-image img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 4px;
}


.ce-block--type-image figcaption {
    text-align: center;
    font-size: 0.875rem;
    color: #666;
    margin-top: 0.5rem;
}

.complete-btn {
    background: linear-gradient(135deg, #198754, #20c997);
    border: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(25, 135, 84, 0.2);
}

.complete-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(25, 135, 84, 0.3);
}

.complete-btn:disabled {
    transform: none;
    box-shadow: none;
}

.badge {
    font-size: 0.9em;
    padding: 0.5em 0.8em;
}